package com.yxinsur.imc.framework.aspectj;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.yxinsur.imc.common.annotation.ApiLog;
import com.yxinsur.imc.common.enums.HttpMethod;
import com.yxinsur.imc.common.exception.BusinessException;
import com.yxinsur.imc.common.utils.ServletUtils;
import com.yxinsur.imc.common.utils.StringUtils;
import com.yxinsur.imc.common.utils.ip.IpUtils;
import com.yxinsur.imc.framework.manager.AsyncManager;
import com.yxinsur.imc.framework.manager.factory.AsyncFactory;
import com.yxinsur.imc.system.domain.SysOperLog;
import com.yxinsur.imc.system.mapper.SysOperLogMapper;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.validation.BeanPropertyBindingResult;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.HandlerMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;

/**
 * API日志记录处理
 * 
 * @author imc
 */
@Aspect
@Component
public class ApiLogAspect
{
    private static final Logger log = LoggerFactory.getLogger(ApiLogAspect.class);

    private ThreadLocal<Long> startTime = new ThreadLocal<>();

    @Autowired
    private SysOperLogMapper sysOperLogMapper;

    private SysOperLog apiOperLog = null;

    // 配置织入点
    @Pointcut("@annotation(com.yxinsur.imc.common.annotation.ApiLog)")
    public void logPointCut()
    {
    }

    @Before("logPointCut()")
    public void doBefore(JoinPoint joinPoint) {
        startTime.set(System.currentTimeMillis());
        apiOperLog = new SysOperLog();
        //获取传入目标方法的参数
        Object[] args = joinPoint.getArgs();
        Object arg = null;
        for (int i = 0; i < args.length; i++) {
            arg = args[i];
            break;
        }
        String str = JSONObject.toJSONString(arg);
        //apiOperLog.setTransId(UUIDUtil.getTransID());
        apiOperLog.setOperParam(str);
        String ip = IpUtils.getIpAddr(ServletUtils.getRequest());
        apiOperLog.setOperIp(ip);
        apiOperLog.setOperUrl(ServletUtils.getRequest().getRequestURI());
        // 设置方法名称
        String className = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();
        apiOperLog.setMethod(className + "." + methodName + "()");
        // 设置请求方式
        apiOperLog.setRequestMethod(ServletUtils.getRequest().getMethod());

        try {
            ApiLog controllerLog = getAnnotationLog(joinPoint);
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, apiOperLog);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Around("logPointCut()")
    public Object doAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        try {
            Object obj = proceedingJoinPoint.proceed();
            return obj;
        } catch (Exception e) {
            apiOperLog.setStatus(0);
            if(e instanceof BusinessException){
                BusinessException be = (BusinessException) e;
                apiOperLog.setErrorMsg(be.getMessage());
            }else{
                apiOperLog.setErrorMsg(e.getMessage());
            }
            apiOperLog.setJsonResult(apiOperLog.getErrorMsg());
            apiOperLog.setStatus(1);
            apiOperLog.setCreateTime(new Date());
            // 保存数据库
            AsyncManager.me().execute(AsyncFactory.recordOper(apiOperLog));
            throw e;
        }
    }

    @AfterReturning(returning = "ret", pointcut = "logPointCut()")
    public void doAfterReturning(Object ret) {
        String retString = JSONObject.toJSONString(ret);
        apiOperLog.setStatus(0);
        apiOperLog.setJsonResult(retString.length()>5000?JSONObject.toJSONString("请求参数数据过长不与显示"):retString);
        apiOperLog.setCreateTime(new Date());
        // 保存数据库
        AsyncManager.me().execute(AsyncFactory.recordOper(apiOperLog));
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log 日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, ApiLog log, SysOperLog operLog) throws Exception
    {
        // 设置action动作
        operLog.setBusinessType(log.businessType().ordinal());
        // 设置标题
        operLog.setTitle(log.title());
        // 设置操作人类别
        operLog.setOperatorType(log.operatorType().ordinal());
        // 需要保存request，参数和值
        String requestMethod = operLog.getRequestMethod();
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod))
        {
            String params = argsArrayToString(joinPoint.getArgs());
            operLog.setOperParam(StringUtils.substring(params, 0, 2000));
        }
        else
        {
            Map<?, ?> paramsMap = (Map<?, ?>) ServletUtils.getRequest().getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
            operLog.setOperParam(StringUtils.substring(paramsMap.toString(), 0, 2000));
        }
    }



    /**
     * 是否存在注解，如果存在就获取
     */
    private ApiLog getAnnotationLog(JoinPoint joinPoint) throws Exception
    {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null)
        {
            return method.getAnnotation(ApiLog.class);
        }
        return null;
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray)
    {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0)
        {
            for (int i = 0; i < paramsArray.length; i++)
            {
                if (!isFilterObject(paramsArray[i]))
                {
                    Object jsonObj = JSON.toJSON(paramsArray[i]);
                    params += jsonObj.toString() + " ";
                }
            }
        }
        return params.trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o)
    {
        Class<?> clazz = o.getClass();
        if (clazz.isArray())
        {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        }
        else if (Collection.class.isAssignableFrom(clazz))
        {
            Collection collection = (Collection) o;
            for (Iterator iter = collection.iterator(); iter.hasNext();)
            {
                return iter.next() instanceof MultipartFile;
            }
        }
        else if (Map.class.isAssignableFrom(clazz))
        {
            Map map = (Map) o;
            for (Iterator iter = map.entrySet().iterator(); iter.hasNext();)
            {
                Map.Entry entry = (Map.Entry) iter.next();
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse || o instanceof BeanPropertyBindingResult;
    }
}
